Physicists observe new magnetic state of bismuth ferrite

May 1, 2013

(Phys.org) —Using computer models, a graduate student at the University of Arkansas has collaborated with scientists in the United States and Europe to observe a new magnetic state of bismuth ferrite.

These scientists and Dovron Rahmedov, a doctoral student in physics, published the results Monday, April 28, in the advance online edition of the journal Nature Materials. Laurent Bellaiche, a professor of physics, also contributed to the paper. Rahmedov and Bellaiche conducted their research in the physics department and Institute for Nanoscience and Engineering at the University of Arkansas.

Bismuth ferrite is a compound that can change its when under a magnetic field or magnetic properties when under an electric field. Because of these effects, bismuth ferrite interests researchers who want to design novel devices—based on magneto-electric conversion.

"Bismuth ferrite is a very unusual material," Rahmedov said. "It is a multifunctional material that can open a door to a future generation of . In the published work we have collaborated with several European groups to investigate the behavior of the material under epitaxial strain."

Epitaxial strain is the technical phrase for a deformity in the material, which arises from the substrate on top of which the material is grown, Rahmedov said.

"Under such strain the of the bismuth ferrite passes through three different magnetic states, and one of those states is unexpected and was not observed before," he said. "Considering the complexity and importance of this material, the discovery of new of the material is an important breakthrough in this field. Despite a flurry of research in recent years to study this material, bismuth ferrite keeps surprising us with its new properties." 

Explore further: Domain walls that conduct electricity

Related Stories

Domain walls that conduct electricity

January 29, 2009

The logic and memory functions of future electronic devices could shrink dramatically - to one or two nanometers (billionths of a meter) instead of the many tens of nanometers that characterize today's most advanced elements ...

Electric Switches Hold Promise for Data Storage

May 22, 2009

(PhysOrg.com) -- Multiferroics are materials in which unique combinations of electric and magnetic properties can simultaneously coexist. They are potential cornerstones in future magnetic data storage and spintronic devices ...

Researchers take the lead out of piezoelectrics

November 13, 2009

There is good news for the global effort to reduce the amount of lead in the environment and for the growing array of technologies that rely upon the piezoelectric effect. A lead-free alternative to the current crop of piezoelectric ...

New Path To Solar Energy Via Solid-State Photovoltaics

March 30, 2010

(PhysOrg.com) -- Berkeley Lab researchers have found a new mechanism by which the photovoltaic effect can take place in semiconductor thin-films. This new path to energy production brightens the future for photovoltaic technology ...

Enhancing the magnetism

March 18, 2011

(PhysOrg.com) -- Berkeley researchers find enhanced and controllable magnetization in unique bismuth ferrite films.

Silver sheds light on superconductor secrets

December 20, 2012

(Phys.org)—By doping a bismuth-based layered material with silver, Chinese scientists demonstrated that superconductivity is intrinsic to the new material rather than stemming from its impurities.

Recommended for you

New blow for 'supersymmetry' physics theory

July 27, 2015

In a new blow for the futuristic "supersymmetry" theory of the universe's basic anatomy, experts reported fresh evidence Monday of subatomic activity consistent with the mainstream Standard Model of particle physics.

Rogue wave theory to save ships

July 29, 2015

Physicists have found an explanation for rogue waves in the ocean and hope their theory will lead to devices to warn ships and save lives.

Researchers build bacteria's photosynthetic engine

July 29, 2015

Nearly all life on Earth depends on photosynthesis, the conversion of light energy into chemical energy. Oxygen-producing plants and cyanobacteria perfected this process 2.7 billion years ago. But the first photosynthetic ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.